This is a well-maintained Dental Lab Vacuum Adapter, in full working condition. Please see video which shows the light switch being turned on to power the unit, as well as the heater switch being engaged to show that it is fully functional as well.
Specs:
Single phase heater- 115 volts, 550 watts
60 cycle motor- 115 volts, 720 watts.
Omnidental Corp.
Harrisburg, PA
Serial Number- 5450.